Safety device for doors



A. L. CRESCI. SAFETY DEVICE FOR DOORS. APPLicAUon mfp Aue, I7, 1920.

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INVENTOR 4l y/ 5 dnhon/L.`Ures 5 46 W5 ATTORNEY ANTHONY L. CRESCI, OF

VINELAND, NEVI JERSEY.

SAFETY DEVlCE FOR DOORS.

Speciication o iai'neoi.

Application led August 'l T0 all tolto/nz. t may concern.'

Be it lnown that l, AN'irioNr L. Cnnsoi, a citizen of the United States, residing at Vineland, in the county of Cumberland and State of New Jersey, have `invented certain new and useful Improvements in v Safety Devices for Doors, of which the following is a specification. Y

My invention relates to improvements in a safety device for doors and particularly to a safety device for locking the door against movement in the direction of closing the door. The object of my invention is to provide a safety device for either vertically or horizontally sliding doors, which will loclr the door against movement when the door strikes an obstruction in its path, and a .fun ther object of my invention is to provide the safetydevice with means for stopping the door when engaged by a quickly moving object, such as an automobile passing through the doorway; these together with various novel forms of construction and operation which will be more fully hereinafter described and claimed constitute my invention.

Referring to the accompanying drawings; Fig. l is a view in elevation of a vertically sliding door and the door frame, showing my invention embodied therein; Fig. 2 is a transverse section of the door, on line 2-4-2, Fig. l, drawn on a. larger scale; Fig. 3 is a view similar to Fig. 2, showing the door closed and the guard member in a position to allow the door to close; Fig. 4e is a view similar to Fig. 2, drawn on a larger scale, showing'the guard member tilted as when engaged by a moving object; Fig. 5 is a horizontal se'ction'on line 5-5, Fig. l, drawn on a larger scale;- Fig. 6 is a vertical section of a portion of a door showing a modified form of the guard member; Fig. 7 is a view in elevation of `a horizontally sliding` door, showing another form of my invention ap# plied thereto; Fig. 8 is a horizontal section, on line 8 8, Fig. 7; Fig. 9 is a horizontal section, on line 9-9Fig. 7 and Figs. 10 and ll areviews similar to Fig. 8,showing the guard member in different positions.

In the accompanying drawings, in which like reference characters refer to lilre'parts in Figs. l to 6 inclusive, l represents a vertically sliding door and 2 represents the frame or guides in which the door is mounted and adapted to be 'aised and lowered by a f Letters Patent. ilbfifleiitl Fifty 7, ieee. semi no. 404,245.

cable 3, operated by suitable mechanism, not shown in the drawing.

The guard mechanism upon the door for operating the locking mechanism comprises amovable member 5 and a guard strip (3 associated with the movable member and adapted to extend beyond the edge of the door. The guard strip 6 is arranged so that when thc door encounters an obstruction in its path, the movable member will be held against further movement and a slight additional movement of the door will actuate the loching mechanism and hold the door against closing movement. Said guard strip is also hingedly mounted in relation to the door and to the said movable member 5 so that an object passing through the door-way at right angles to the door will rock the guard strip G and impart a sliding movement to the movable member 5, which latter movement immediately actuates the locking mechanism, without any further movement of the door whatsoever', and locks 'the door against further closing movement. l

rl`he movable member 5 is slidably mounted in retaining brackets S, secured upon the door, as shown in Figs. l and 2. Said brackets S are of sul'licient length to permit the movable member 5 and the guard strip G to be entirely en'ibraced therein when the door is closed, as shown in Fig. 3. y A bar 9 is attached to the central portion of the movable member 5 and is rigidly braced by strips lO, so that pressure exerted against one end of the movable member 5 will be communicated to the bar 5,). y

The bar f) communitrates motion to a pnwl l2 pivot/ed upon the door, or upon a part movable with the door, whereby the pawl is moved into engagement with a stationary track 13 and thus holds the door against further movement. il. lever l5 is pivoted at 16 upon the door and engages a rod 18 at one end which is pivotally connected with the pawl lf2.

The weight of the guard mechanism holds the pawl l2. out of engagement and when an obstructionis encountered `which will move the parts into the position shown in dotted lines, F ig. l, the spring' 1.9 will move the vlever l5 and throw the pawl 'lfb into locking engagement with the traclr i3. The spring 19 also forms a counter balance which nearly carries the weight of the guard meehanism, so that the guard mechanism may he actuated by a very slight force, and the door may be thus stopped by a person standing under it without the person experiencing any shock or injury.

. A slip joint is provided between the lever 15 and the bar 9 to permit the bar to have a greater movement than the lever, so that the movable member 5 and the guard strip G may rest upon the iioor and the door continue to close until it also rests upon the floor, as shown in Fig. 3. Said loose joint consists of a link 20 pivoted to the lever 15 at one end and having a hole formed in the other end 21 through which the bar 9 passes. A collar 22, secured on the bar 9, limits the downward movement of the bar in relation` `to the lever 15 and permits the bar to slide upward independently of the lever.

The guard stripl 6, shown in Figs. 1 to 5 inclusive, consists of two sections 24 and 25, hinged together by double spring hinges 26, which normally hold the two sections 24 and 25 in the same plane, as shown in Fig. 2. Said hinges will allow the section 25 to swing thereon to a greater extent than the section 24 can swing upon its fulcrum, as shown in Fig. 4. By dividing the guard strip into two sections 24 and 25 a moving object may pass under the door, after the guard strip has come in contact with it, without breaking the guard strip. However, for the operation of the movable member 5, the guard strip may be considered as being made in a solid piece, as shown in Fig. 6. Said hinges 26 are made relatively rigid so that the entire guard strip 6 will swing as a unit, as shown in dotted lines, Fig. 2, and operate the movable member 5. The section 25 will only swing upon the hinges 26 when actuated by a greater force than is required to swing the section 24 of the guard strip. j

The guard strip 6 is provided with angle plates 28 and 29, secured to opposite sides of the guard strip. The door is provided with a bearing plate 30 secured thereto, upon which the angle plate 2S rests, and also a bearing plate 31 formed upon the lower end of the retaining bracket 8. Said bearing plates 3() and 31 form steps upon which the opposite angle plates 28 and 29 may swing in either direction to lift the movable member suiiiciently to actuate the locking mechanism.

The guard strip 6 is hinged to the movable member 5 by double spring hinges 34, or the movable member 5 may be provided with a cam shoe 35, as shown in Fig. G, for` imparting a sliding movement to the movable member when the guard strip isrocked upon either fulcrum 30 or 31. I prefer to use the hinges so that the weight of the guardstrip 6 may be partially counterbalanced by the spring 19.

When the door is suspended, as shown in Figs. 1 and 2, the guard strip 6 rests upon the bearing plates 30 and 31. Should the guard strip come down directly upon an obstruction, the door will continue to descend and the guard strip 6 and the movable memv ber 5 remain rigid and will not bend at the hinged joints. A slight downward movement of the door after the guard strip 6 is retarded in its motion will be sufficient to move the pawl 12 into engagement with the track 13 and lock the door against further movement. The lower end of the retaining bracket 8 is provided with a curved end portion 37, for guiding the guard strip into the space formed between the bracket 8 and the filling strip 38 secured to the door. Ample space is provided between the bracket 8 and the spacing strip 38 to allow the guard strip G to swing sufficiently to move the movable member 5 and aetuate the locking mechamsm.

The form` of my invention adapted for a horizontally sliding door is shown in Fig. 7', and the succeeding views; it consists of aguard strip 40 hinged to blocks 41, rigidly secured to the door 42. The guard strip is mounted upon double acting spring hinges 43 upon which it may swing, as shown in Figs. 10 and 11. The rocking movement of the guard strip 40 will impart a sliding movementA to the movable member 45 through the action of the cam shoes 46 upon the guard strip 40. The movable member 45 actuates a pawl 48 pivoted upon a carriage 49 on a track 50 upon which the door is carried. The bar 52 on the movable member 45 is connected with a lever 53 pivoted on the door, whichlever lifts the pawl 4S into locking engagement with the track 50, through the connecting rod 54. The compression spring 55 is provided to permit the movable member 45 to have a-greater movement than the rod 54. The weight of the, rod\ tends to hold the movable member 45 against the cam shoe 4G upon the guard 110 strip 40. j

The guard strip 40 is made in two pieces 56 and `57, rigidly secured together or hinged together by double actinghinges, suchL as shown in Fig. 4, which Aare more rigid in their action than ,the hinges 43. The piece 56 of the guard strip 40 is set at an oblique angle to the piece 57, `so that the door may close without the forward edge of the guard strip 40 striking the door frame.

Having thus described my invention, I claim and desire to secure by Letters Patent:

1. A sliding door, a stationary member located adjacent to the path of the door, locking mechanism movable with the door adapted to engagesaid stationary member and hold the door against forward closing movement, a guard strip upon the door extending beyond the forward edge of the door, bearing members secured `upon the door upon which the guard strip is fulcrumed and adapted to swing on an axis extending parallel with vthe forward edge of the door, and mechanism associated with the guard strip for actuating the locking mechanism, when the guard strip is swung upon said bearing members.

2. A sliding door, a stationary member lolated adjacent to the path of the door, locking mechanism movable with the door adapted to engage said stationary member and.` hold the door against forward closing move- `ment, a movable member slidably mounted upon the door, connecting means between the movable member and the locking mechanism, a guard strip adapted to project beyond the forward edge of the door, bearing members secured upon the door upon which said guard strip is fulcrumed upon an aXis extending parallel with the forward edge of the door, and mechanism associated with the guard strip for communicating motion to the said movable member when the guard strip is swung upon said axis for operating the .locking mechanism.

3. A sliding door, a stationary7 member located adjacent to the path of the door, locking lmechanism movable with the door adapted to engage said stationary member and hold the door against forward closing movement, a movable member slidably mounted upon the door and operably connected with the said locking mechanism, a guard strip adapted to project beyond the forward edge of the door, and said guard strip fulcrumed upon the door and positioned in operative relation to the said movable member whereby a swinging movement of the guard strip will actuate the movable member and lock the door against forward movement.

4. A sliding door, a stationary member located adjacent to the path of the door, locking mechanism movable with the door adapted to engage said stationary member and hold the door against forward closing movement, a movable memberl slidably mounted upon thekdoor and operably connected with the locking mechanism, a guard strip upon the door adapted to extend beyond the forward edge thereof, bearings secured upon the door on which the guard strip is fulcrumed and adapted to swing in either direction, and means interposed between the guard strip and the said movable member whereby a movement of vthe guard strip will actuate the movable member and engage the locking mechanism.

5. A sliding door, a stationary member located adjacent to the path of the door, locking mechanism movable with the door adapted to engage said stationary member and hold the door against forward closing movement, a movable member slidably mounted upon the door and operably connected with the locking mechanism, a guard strip upon fs the door adapted to extend beyond the forward edge of the door, bearings secured upon the door on which the guard strip is fulcrumed and adapted to swing in either direction, and hinges secured between the guard strip and the said movable member whereby a swinging movement of the guard `strip uponsaid bearings will slide the said movable member and actuate the locking mechanism. j

G. A sliding door, a stationary member located adjacent to the path of the door, locking mechanism movable with the door adapted to engage said stationary member and holdV the door against forward closing movement, a movable member slidably mounted upon the door and operatively connected with. the locking mechanism, a guard strip projecting beyond the forward edge of the door adapted to strike an obstruction in the path of the door and slide the movable member to actuate the locking mechanism, a retaining bracket secured upon the door in which the movable member is slidably mounted, plates secured upon opposite sides of the guard strip, and bearings secured upon the door and upon the said retaining bracket upon which said plates are fulcrumed whereby the guard strip may swing and actuate the said movable member and lock the door against further closing movement.

7. A sliding door, a stationary member located adjacent to the path of the door, locking mechanism movable with the door adapted to engage said stationary member and hold the door against forward closing movement, a movable member slidably mounted upon the door and operably connected with the said locking mechanism, a guard strip adapted to project beyond the forward edge of the door, bearings secured upon the door, said guard strip being fulcrumed upon said bearingsand adapted to swing on an axis extending parallel with the forward` edge of the door whereby an object moving through the doorway and striking the guard strip will swing the latter upon its fnlcrum, (zo-acting plates interposed between the guard strip and the movable member whereby a swinging movement of the guard strip will slide the movable member and actuate the locking mechanism and lock the door against any further closing movement, said guard strip comprising two parallel sections, and means for yieldingiy securing said sections together.

8. A door, guides in which the door is slidably mounted, locking mechanism adapted to hold the door against closing movement, a guard strip upon the door adapted to extend beyond the forward edge of the door, said guard strip divided longitudinally into two sections, double acting hinges located between the sections of the guard trip, a retaining bracket upon the door for .llO

retaining tbe movable member and the adjacent section of the guard strip, bearing plates upon the door and upon said retaining bracket, projecting plates upon the section of the guard strip located adjacent to the movable member adapted to rest upon the said bearing plates and form a double ulcrum for the guard strip to swing thereon, and means associated with the guard 'imager guide and look` the door Yagainst further movement, afmovable member mounted upon the door, a guard strip extendlng beyond the forward edge of the door, plates' projecting 20 from'opposite sides of the guard strip, bearing plates secured to the door upon which the said plates upon the guard strip are fulcrumed, a bar secured to said movable member,"a brace between said bar and said mov- 25 able member, a lever pivotally mountedupon thedoor and actuated by the "said bar, and a connecting member between said lever and the said'pavvl.

In testimony Whereof` afi-lx my signature. 30

ANTHONY L. cani-scr. 

